Gas producer



4 Sept.`7 1926. 1,599,022

A. H. LYMN ET AL GAS PRODUCER Filed April 24, 1919 2 Sheets-Shag# 2 IIIf M 9 um /NvENToeSf F'G. I AQTHUQHLYMN 'NmLs E. Emmaus ,50' the upper'side of said grate has been'pro-f Patentedertfz.1926i.

UNITED-STATES n'rnun nENDY or wnsrmmsrnn,

1,599,022 PATENTQo-FFIC. Y

LONDON, ND NIELs EDWARD RAMBUSH,

'OF STOCKTON-ON-TEES, ENGLANI.

appnmon nieu April a4, 1919, serial Naaaaas, and in Great Britain my 17,191s.

The present invention relates to improvements in andrelating to gasproducers.

In connection with the working of gas producers it is well known that inorder to AI obtain the most economical results and the best gasifyingeffects that the gaps :formed inthe mass of the *fuel due to caking,should bey caused 'to fill up and clinkering of the ash should beprevented; 'For l this purpose it is the practice t moderately agitatethe charge by mechanf ically raising and lowering the whole or partofthe revolving base in relation to the stationary part of thelproducer. 4Generally the means used consisted in the arrangement of aconical grate with'spiral ste s' thereupon, or by providing helical convvo utions cut away to forrnfaces adapted to break u the clinker andconvey the same t-o'wards t e pan,- which helical surfaces, may, in somecases gradually merge into cylindrical contour.

In such known devices a great numberof spaces are left between theprojecting andcut-away portions 'of the surface which quickly fill upwith hard setting clinker and ashes, so that the device is bound to act,after a short time, more or less as a cone, thusfailing not only toraise and lower the l0 fuel but also to convey the ashes towards theshell of the producer. v

Inother knowndevlces only; a few raising surfaces are Aprovided ontherevolving grate, so' arranged that they terminate very 'abruptly soasl to provide a steep and abrupt drop for the'fuel, thus enabling theclinkers to be broken up' andto'f fall into radially arranged channelsor into a yhorizontal grate provided with openings for the blast.

f 40 For such devlces generally, one driving mechanism isused to revolvethe grate. an

another driving mechanism is required for driving the ash removaldevices.

Moreover th'e blast holes 'in such known 5 devices au up rapidly withcanker' and im- .pair the vsmooth working of the producer.'

j In order to obviate these disadvantages in oneI construction used inpractice, a grate has been ixed on a revolvableash-bowland vided 'with'spiral configurations having a very gradual rise terminated byabruptshoulders of considerable depth, in which the fopenings for the blastare arranged in rilrg n s such way that the fuel and ashes cannotobstruct said holes.

It has been found with certain classes of fuel, thatabrupt shoulders ofconsiderable depth causev the charge to drop'too abruptly and suddenly,which with certain kinds of fuel, may leadto irregular working of' the.producer.

The' present 'invention aims at obviating this disadvantage and atproviding a revolvable grate adapted to Work with any'65 kind offuel.

According to the invention we provide means by which whilst aconsiderable total drop of the charge is retained, the dropl of 4 thecharge is rendered less sudden and abrupt;

1 The invent-ion also provides forfconstructional improvements, with theobject' of reducing the cost of manufacture.

In order to understand the invention more 75. clearly reference is madeto the accompanying drawingwhich shows by way of example oneconstruction;

The following description is to be read in the light of direction ofrotation of the ashbowl as indicated by the arrow.

Fig. lshows an elevation partly in section o'f the lower part of" thegas producer with the revolvable grate.`

Fig. 2 is a sectionalplan A on the line x-x 85 of Fig. 1.

Fig. 3 is` a vertical section through the' grate of a modification,showing' the interconnection of the bars of the grateg'and Fig. 4 is anelevation looking along arrow Ashowii in Fig. 3. Y Referring to thedrawings, I1-indicates the(` ash bowl, bis the producer shell orcasing., c the innerlining of the producer, d a cylinl dricalshell-forming the extension v'of the 95 producer shell into the ashbowl, and g is the` grate'orblast distributor, fixed to the revolvableash bowl a by bolts and nuts u.A

The ash bowl av is adapted to revolve on rollers 'f. The rotation iseifected by provid- 100 ing a toothed ring around the periphery of'said`ash bowl. ngaging//saidtoothed is a spur wheel s, 'driven by a shaft t.

will be seen fromfFig.-2 the grate g is Vconstructed in four, parts,each part'con- 105 Y the' F0 .sisting oftwo sections. ,(ne sectionserves t'o gra-dually raise the'v charge and the other section'serves todropa'tagam.-

The surface of each raising section 7L, 2', Z, has a gradual upwardslope the point L of each of said raising sections being lower than thepoint i, whilst the point ,7c of each of said raising sections is lowerthan the point Z. The gradual slope of the surface between the points h,7c, Z, z' of each of said raisingsections is preferably slightly curved.

In each raising section the boundary line z', Z, indicates itshighestsurface level, and the boundary line h, 1, of each raising sectionindicates its lowest level. The differences in level between the saidboundary lines z', Z, and 7L, Zn, represent the total rise of theproducer charge.

The drop sections according to the present invention are made lessabrupt and sudden than in known constructions by providing between thehighest level z', Z, of each rais- `ing section and the lowest level71., 7c, oli each next 'raising section a series ot horizontal steps m,suitably supported at m and spaced apart by bridge pieces g leavingintermediate gaps 7' so as to torni a sloping step grate, of gradualaverage slope, and the blast which enters troni below the grate throughthe luted inlet pipe a issues through 1 said gaps r between the steps m,while an, additional outlet may be provided around the part p coveringthe blast inlet.

The steps mare preferably made in such way that they interlock with eachother, and so that they can be easily replaced.

As will be seen from Fig. 3 only one bar m is iixed to the grate g byineans ot a` bolt andfnut "u the remaining bars mutually keeping eachother in position by ineans et the aforesaid bridge pieces Q.

l. In a gas producer, a stationary shell, a revoluble ash bowl and agrate lixed upon Said ash bowl, the upper side of said grate beingorined oit a .plurality of wave-like sectors radiating from connnonpoint situated within the periphery of said grate, said wave-likesectors being relatively wide in the horizontal direction, gra-duallyrising to a. peak and thereupon sloping gradually downwardly, therebyprovidingonly a few upwardly directed projections.

,2. In a gas producer, a stationary shell,

a revoluble ash bowl and a grate fixed upon said ash bowl, said gratehaving the shape of laterally displaced vertical sections of a cylinderand having a .series of wave-like upper surfaces radiating from a commonpoint situated'within the periphery of said grate, said wavelikesurfaces beingl relatively wide in the yhorizontal direction andgradually rising to a peak and thereupon sloping J- graduallydownwardly, thereby providing only a few upwardly directed projections.

3. In a gas producer, a stationary shell, a revoluble ash bowl and agrate {ixed upon said ash bowl, the upper side of said grate beingformed of a plurality of wave-like sectors radiating from the axis ofrotation of said grate said wave-like sectors being relatively wide inthe horizontal direction and gradually rising to a peak and thereuponsloping gradually downwardly, thereby roviding only a few upwardlydirected pro]ect1ons.

4. In a gas producer, a stationary shell, a revoluble ash bowl and agrate fixed upon said ash bowl, the upper side oi ,said grate beingformed of a plurality ot wave-like sectors radiating from a connnonpoint situated within the periphery o't' said grate, said wave-likesectors being relatively wide inthe horizontal direction and graduallyrising to a peak and thereupon sloping gradually downwardly, therebyproviding only a few upwardly directed projections, said downwardlysloping surfaces being built up of bars separated by gaps.

5. In a gas producer, a stationary shell, a revoluble ash bowl and agrate lined upon said ash bowl, the upper side of said grate beingformed of a plurality of wave-like sectors radiating from a common pointsitu ated within the periphery of said grate', said wave-like sectorsbeing' relatively wide in the horizontal direction and gradually risingto a peak and thereupon sloping grad' ually downwardly, therebyproviding only a few upwardly directed projections, said downwardlysloping surfaces being pro# vided with blast oriiices.

6. In a gas producer, a stationary shell, ar revoluble ash bowl, a gratefixed upon said ash bowl, said grate consisting ot verticalsemi-cylindcrs eccentrically arranged reiatively to each other and tothe axis ot rotation of the grate in such a way that their cylindricalsurfaces at the ends re- 'mote Jrom said axis of rotation protrudelaterally towards said shell, the upper side of said grate being formedor" a plurality o wave-like sectors radiating from a coinmon pointsituated within the periphery of said grate, said wave-like sectorsbeing relatively wide in the horizontal direction, gradually rising to apeak and thereupon sloping gradually downwardly, thereby providing only,a few upwardly directed projections.

In testimony whereof, we afliX our signatures.

ARTHUR HENRY vLYMN. NIELS EDWARD RAMBUSH.

